warning LEXUS RX450h 2021 Workshop Manual

962-1. Instrument cluster
refer to the explanations of each system.
Vehicle speed display area
Displays the following items:
• Vehicle speed
• Speed limit (vehicles with a navigation system) (U.S.A. only)
• Road sign icons recognized by the RSA ( P.236)
Hybrid System Indicator/Tachometer ( P.99)
Shift position display ( P.191)
HUD (Head-up display) switch ( P.96)
■Head-up display
The head-up display may seem dark or hard
to see when viewed through sunglasses,
especially polarized su nglasses. Adjust the
brightness of the head-up display or
remove your sunglasses.
■Enabling/Disabling the head-up
display
Press the HUD (Head-up display)
switch.
E
F
G
H
WARNING
■Before using the head-up display
●Check that the position and brightness
of the head-up display image does not
interfere with safe driving. Incorrect
adjustment of the image’s position or
brightness may obstruct the driver’s
view and lead to an accident, resulting
in death or serious injury.
●Do not continuously look at the
head-up display while driving as you
may fail to see pedestrians, objects on
the road, etc. ahead of the vehicle.
NOTICE
■To prevent damage to components
●Do not place any drinks near the
head-up display projector. If the pro-
jector gets wet, electrical malfunctions
may result.
●Do not place anything on or put stick-
ers onto the head-up display projector.
Doing so could interrupt head-up dis-
play indications.
●Do not touch the inside of the head-up
display projector or thrust sharp edges
or the like into the projector. Doing so
could cause mechanical malfunctions.
Using the head-up display

972-1. Instrument cluster
2
Vehicle status information and indicators
■Changing settings of the head-up
display
Select on the multi-information
display ( P.480) to change the fol-
lowing settings:
 Display brightness/position
Select to adjust the brightness and position
of the head-up display.
 Display content
Select to enable/dis able the following
items:
• Route guidance to destination (if equipped)
• Driving assist system status (if equipped)
• Compass (if equipped)
• Audio system operation status
 Hybrid System Indicator/Tachome-
ter
Select to display Hybrid System Indica-
tor/tachometer/no content.
Display angle
Select to adjust the angle of the head-up
display.
■Enabling/disabling of the head-up dis-
play
If the head-up display is disabled, it will
remain disabled when the power switch is
turned off then back to ON mode.
■Display brightness
The brightness of the head-up display can
be adjusted on of the multi-information
display. Also, it is automatically adjusted
according to the ambient brightness.
■Automatic adjustment of the head-up
display position (if equipped)
A desired head-up display position can be
entered to memory and recalled automati-
cally by the driving position memory sys-
tem. ( P.142)
■When the 12-volt battery is discon-
nected
The customize settings of the head-up dis-
play will be reset.
Displays the following multi-informa-
tion display linked icons:
: Master warning icon
Displayed when a warn ing message is dis-
WARNING
■Caution for changing settings of the
head-up display
As the hybrid system needs to be operat-
ing while changing th e settings of the
head-up display, ensure that the vehicle
is parked in a place with adequate venti-
lation. In a closed area such as a garage,
exhaust gases including harmful carbon
monoxide (CO) may collect and enter
the vehicle. This may lead to death or a
serious health hazard.
NOTICE
■When changing the settings of the
head-up display
To prevent 12-volt battery discharge,
ensure that the hybrid system is operat-
ing while the changing the settings of the
head-up display.
Information icon/Master warn-
ing icon

982-1. Instrument cluster
played on the multi-information display.
( P.428)
: Information icon
Displayed when a suggestion/advice
pop-up display is displayed on the
multi-information display. ( P.93)
Displays the following items in the
appropriate situation:
■Warning/Message (if equipped)
Displays the following system warn-
ing/messages:
 PCS (Pre-Collision System)
( P.220)
 Parking Support Brake function (for
static objects) ( P.271)
 Dynamic radar cruise control with
full-speed range ( P.238)
 Brake Override System ( P.164)
 Drive-Start Control ( P.165)
Details of content displayed on the
head-up display may differ from that dis-
played on the multi-information display. For
details, refer to the explanation of each sys-
tem.
■Audio system operation status
Displayed when the audio system is
operated.
■Outside temperature
Displayed in the following situations:
 When the power switch is turned to
ON mode
 When the low outside temperature
indicator is flashing Displayed content is the same as that
displayed on the multi-information dis-
play. For details, refer to the explana-
tion of the outside temperature display
on the multi-information display.
(
P.86)
Displays the following items which are
linked to the navigation system:
■Street name
The name of the street that the vehicle
is currently driving on is displayed on
the bottom of the display area.
When the navigation system is per-
forming route guidance, the name of
the next street will be displayed on the
top of the display area.
■Street name display (vehicles with a nav-
igation system)
Only street names which are included in the
map data will be displayed.
Displays the following items which are
linked to the navigation system:
■Route guidance to destination
Displayed when the navigation system
is performing route guidance. When
approaching an intersection, an arrow
will be displayed to indicate the sug-
gested direction of travel.
■Compass
Displays the direction of travel.
Message display area
Navigation system-linked dis-
play area (if equipped)

1113-2. Opening, closing and locking the doors
3
Before driving
mechanical key. (P.447)
■Customization
Some functions can be customized.
(  P.480)
■Door lock switches (to
lock/unlock)
1 Locks all the doors
2 Unlocks all the doors
■Inside lock buttons (to lock)
Push down the inside lock button to
lock the door.
■Inside door handles (to unlock)
For the front doors
Pull the handle to unlock and open the
door.
When the door is unlo cked, the inside lock
button will pop up.
For the rear doors
Pull the handle to unlock the door. Pull
the handle a second time to open the
door.
WARNING
■To prevent an accident
Observe the following precautions while
driving the vehicle.
Failure to do so may result in a door
opening and an occupant falling out,
resulting in death or serious injury.
●Ensure that all doors are properly
closed and locked.
●Do not pull the inside handle of the
doors while driving.
Be especially careful for the front doors,
as the doors may be opened even if the
inside lock buttons are in locked position.
●Set the rear door ch ild-protector locks
when children are seated in the rear
seats.
■When opening or closing a door
Check the surroundings of the vehicle
such as whether the vehicle is on an
incline, whether ther e is enough space
for a door to open and whether a strong
wind is blowing. When opening or clos-
ing the door, hold the door handle tightly
to prepare for any unpredictable move-
ment.
Unlocking and locking the doors
from the inside

1123-2. Opening, closing and locking the doors
When the door is unlocked, the inside lock
button will pop up.
■Locking the doors from the outside with-
out a key
1 Push down the inside lock button.
2 Close the door.
The door cannot be locked if the power
switch is in ACCESSORY or ON mode, or
the electronic key is le ft inside the vehicle.
However, the key may not be detected cor-
rectly and the door may be locked.
■Open door warning buzzer
If the vehicle speed reaches 3 mph (5
km/h), the master warning light flashes and
a buzzer sounds to indicate that door(s) or
the hood in not fully closed.
The open door(s) or h ood is displayed on
the multi-information display.
The door cannot be opened from
inside the vehicle when the lock is set.
1 Unlock
2 Lock
These locks can be set to prevent children
from opening the rear doors. Push down
on each rear door switch to lock both rear
doors.
The following functions can be set or
canceled:
For instructions on customizing, refer to
P.480.
Rear door child-protector lock
Automatic door locking and
unlocking systems
FunctionOperation
Speed linked
door locking
function
All doors are automati-
cally locked when vehi-
cle speed is
approximately 12 mph
(20 km/h) or higher.
Shift position
linked door lock-
ing functionAll doors are automati-
cally locked when shift-
ing the shift lever out of
P.
Shift position
linked door
unlocking func-
tionAll doors are automati-
cally unlocked when
shifting the shift lever
to P.
Driver’s door
linked door
unlocking func-
tionAll doors are automati-
cally unlocked when
driver’s door is
opened.

1133-2. Opening, closing and locking the doors
3
Before driving
Power back door
The power back door can be
opened using the power back door
opener switch, smart access system
with push-button start or wireless
remote control.
WARNING
Observe the following precautions.
Failure to do so may result in death or
serious injury.
■Before driving the vehicle
Before driving the vehicle, make sure
that the power back door is fully closed. If
the power back door is not fully closed, it
may open unexpectedly while driving,
causing an accident.
■Caution while driving
●Keep the power back door closed
while driving.
If the power back door is left open, it may
hit nearby objects while driving or lug-
gage may be unexpectedly thrown out,
causing an accident.
In addition, exhaust gases may enter the
vehicle, causing death or a serious health
hazard. Make sure to close the power
back door before driving.
●Never let anyone sit in the luggage
compartment. In the event of sudden
braking, sudden swerving or a colli-
sion, they are susceptible to death or
serious injury.
■When children are in the vehicle
Observe the following precautions.
Failure to do so may result in death or
serious injury.
●Do not allow children to play in the lug-
gage compartment.
If a child is accidentally locked in the lug-
gage compartment, they could have heat
exhaustion or other injuries.
●Do not allow a child to open or close
the power back door.
Doing so may cause the power back
door to move unexpectedly, or cause the
child’s hands, arms, head, or neck to be
caught by the closing power back door.
■Operating the power back door
Observe the following precautions.
Failure to do so may cause parts of the
body to be caught, resulting in death or
serious injury.
●Remove any heavy loads, such as snow
and ice, from the power back door
before opening it. Failure to do so may
cause the power back door to sud-
denly shut again after it is opened.
●When opening or closing the power
back door, thoroughly check to make
sure the surrounding area is safe.
●If anyone is in the vicinity, make sure
they are safe and let them know that
the power back door is about to open
or close.
●Use caution when opening or closing
the power back door in windy weather
as it may move abruptly in strong wind.
●The power back door may suddenly
shut if it is not open ed fully. It is more
difficult to open or close the back door
on an incline than on a level surface, so
beware of the back door unexpectedly
opening or closing by itself. Make sure
that the back door is fully open and
secure before using the luggage com-
partment.

1143-2. Opening, closing and locking the doors
■Smart access system with
push-button start
Carry the electronic key to enable this
function. 1
Locks all the doors
Check that the door is securely locked.
2Unlocks all the doors
The doors cannot be unlocked for 3 sec-
onds after the doors are locked.
■Wireless remote control
 P.107
■Door lock switch
 P.111
■Opening/closing the power back
door using the wireless remote
control
Press and hold the switch for approxi-
mately 1 second.
The power back door can be operated
whether it is locked
* or unlocked.
Pressing the switch while the power back
door is opening/closing will stop the oper-
ation.
Pressing and holding the switch again for
approximately 1 second will operate the
power back door in the opposite direction.
WARNING
●When closing the power back door,
take extra care to prevent your fingers,
etc., from being caught.
●When closing the power back door,
make sure to press it lightly on its outer
surface. If the back d oor handle is used
to fully close the power back door, it
may result in hands or arms being
caught.
●Do not pull on the back door spindle
(P.122) to close the power back
door, and do not hang on the back
door spindle.
Doing so may cause hands to be caught
or the back door spindle to break, caus-
ing an accident.
●If a bicycle carrier or similar heavy
object is attached to the power back
door, it may suddenly shut again after
being opened, causing someone’s
hands, arms, head or neck to be
caught and injured. When installing an
accessory part to the power back
door, using a genuine Lexus part is
recommended.
Unlocking and locking the
power back door from the out-
side
Unlocking and locking the
power back door from the inside
Opening/closing the power back
door

1203-2. Opening, closing and locking the doors
■If the power back door opener is inoper-
ative
The power back door can be unlocked from
the inside
1 Remove the cover.
To protect the cover, place a rag between
the flathead screwdriver and cover as
shown in the illustration.
2 Move the lever.
■Customization
Some functions can be customized.
(  P.480)
WARNING
■Back door closer
●In the event that the power back door
is left slightly open, the back door
closer will automatically close it to the
fully closed position. It takes several
seconds before the back door closer
begins to operate. Be careful not to get
fingers caught or anything else in the
power back door, as this may cause
bone fractures or other serious inju-
ries.
●Use caution when using the back door
closer as it still operates when the
power back door system is disabled.
■Power back door
Observe the following precautions when
operating the power back door.
Failure to do so may cause death or seri-
ous injury.
●Check the safety of the surrounding
area to make sure there are no obsta-
cles or anything that could cause any
of your belongings to get caught.
●If anyone is in the vicinity, make sure
they are safe and let them know that
the power back door is about to open
or close.
●If the power back door system is dis-
abled while the powe r back door is
operating, the power back door will
stop operating. The power back door
must then be operated manually. Take
extra care in this situation, as the
power back door may open or close
suddenly.

1213-2. Opening, closing and locking the doors
3
Before driving
WARNING
●If the operating conditions of the
power back door (P.117) are no lon-
ger met, a buzzer may sound and the
power back door may stop opening or
closing. The power back door must
then be operated manually. Take extra
care on an incline in this situation, as
the power back door may move sud-
denly.
●On an incline, the power back door
may suddenly shut af ter it opens. Make
sure the power back door is fully open
and secure.
●In the following situations, the power
back door may detect an abnormality
and automatic operation may be
stopped. In this case, the power back
door must then be operated manually.
Take extra care in this situation, as the
stopped power back door may sud-
denly open or close, causing an acci-
dent.
• When the power back door contacts an obstacle
• When the 12-volt battery voltage sud- denly drops, such as when the power
switch is turned to ON mode or the
hybrid system is started during auto-
matic operation
●If a bicycle carrier or similar heavy
object is attached to the power back
door, the power back door may not
operate, causing a malfunction, or the
power back door may suddenly shut
again after being opened, causing
someone’s hands, arms, head or neck
to be caught and in jured. When install-
ing an accessory part to the power
back door, using a genuine Lexus part
is recommended.
■Jam protection function
Observe the following precautions.
Failure to do so may cause death or seri-
ous injury.
●Never use any part of your body to
intentionally activa te the jam protec-
tion function.
●The jam protection function may not
work if something gets caught just
before the power back door fully
closes. Be careful not to get fingers
caught or anything else.
●The jam protection function may not
work depending on the shape of the
object that is caught. Be careful not to
catch fingers or anything else.
■Hands Free Power Back Door (if
equipped)
Observe the following precautions.
Failure to do so may cause death or seri-
ous injury.
●Check the safety of the surrounding
area to make sure there are no obsta-
cles or anything that could cause any
of your belongings to get caught.
●Exhaust gasses cause the exhaust
pipes to become quite hot. When
operating the Hands Free Power Back
Door, be careful not to touch the
exhaust pipe.
●Do not operate the Hands Free Power
Back Door if there is little space under
the rear bumper.

1253-2. Opening, closing and locking the doors
3
Before driving
■Antenna locationAntennas outside the cabin
Antennas inside the cabin
Antenna outside the luggage compart-
ment
■Effective range (areas within which the
electronic key is detected)When locking or unlocking the doors
The system can be operated when the
electronic key is within about 2.3 ft. (0.7 m)
of an outside door handle. (Only the doors
detecting the key can be operated.)
When starting the hybrid system or
changing power switch modes
The system can be operated when the
electronic key is inside the vehicle.
■Alarms and warning messages
An alarm sounds and warning messages
are displayed on the multi-information dis-
play to protect against unexpected acci-
dents or theft of the vehicle resulting from
erroneous operation. When a warning mes-
sage is displayed, take appropriate mea-
sures based on the displayed message.
(  P.428)
When only an alarm sounds, circumstances
and correction procedures are as follows.
●When an exterior alarm sounds once for
5 seconds
●When an interior alarm sounds continu-
ously
Smart access system with
push-button start
The following operations can be
performed simply by carrying the
electronic key on your person, for
example in your pocket. The driver
should always carry the electronic
key.
 Locks and unlocks the doors
( P.109)
 Locks and unlocks the back door
( P.114)
 Starts and stops the hybrid system
( P.184)
A
B
C
SituationCorrection
procedure
An attempt was made to
lock the vehicle while a
door was open.Close all of the
doors and lock
the doors
again.
A
B